洞庭湖区血吸虫病防制试点研究表明 ,自 1988～ 1994年 ,人群感染率分别徘徊在 4 44 %～ 6 31% 〔1〕和 6 48%～8 17% 〔2〕之间 ,1995年全省抽样调查证明人群和耕牛感染率分别为 78 4%和 9 6 3 % 〔3〕。尽管连年采取大区域人畜同步化疗、改造易感地带和健康教育等措施 ,但 Dongting Lake area schistosomiasis control pilot study shows that from 1988 to 1994, the population infection rates hovering between 444% ~ 631% [1] and 6 48% ~ 8 17% 〔2〕, the province in 1995 Sampling survey shows that the prevalence of cattle and cattle population were 78.4% and 96.3% (3). Despite successive years of large-scale human and animal simultaneous chemotherapy, rehabilitation of vulnerable areas and health education and other measures, but